William o



W. o. WEBBBR. STEAM ENGINE GOVERNOR.

Patented Jan. 5, 1892.

A' l F r l v l i 65; ATTORNEYJ.

UNTTED STATES PATENT Trrcn.

YVILLIAM O. VEBBER, OF ERIE, PENNSYLVANIA.

STEAM-ENGINE GOVERNOR.

SPECIFICATION forming partof Letters Patent No. 466,475, dated January5, 1892. I Applioationiiled June l5, 189]. Serial No. 396,269. (Nomodel.)

To all whom it may concern.-

Be it known that I, WILLIAM O. WEBBER, a citizen of the United States,residing at Erie, in the county of Erie and State of Pennsylvania,haveinvented certain new and useful Improvements in Steam-EngineGovernors; and I do hereby declare the following to be a full, clear,and exact description of the invention, such as Will enable othersskilled in the art to which it appertains to make and use the same.

This invention relates to steam-en gine governors, and particularly tothat type of steamengine governors wherein the governing apparatus'isplaced in thely-wheel of the engine; and it consists in certainimprovements in the construction thereof, as will be hereinafter fullyset forth, and pointed out in the claims. A Y

Figure l is a side elevation view of the ywheel containing my improvedgovernor. Fig. 2 is a sectional view taken on the line AX BX, the mainspring C not being shown. Fig.

. 3 is a diagram showing the movement of the.

valve-moving crank-pin D.

A represents a ily-wheel having the hub A', with shaft-opening a and theboss A2.

B B are the weight-arms, and B. are'the weights.

C C are the main centripetally-acting springs, which are connected withthe weightarms at c.

D yis the eccentric crank-pin with which the valve-rod engages.

lE is the crank-arm carrying the eccentric crank-pin D.

Fis the rock-shaft journaled in the boss A2.

G is the rock-arm connected with the rockshaft F.

H H are links connecting the rock-arm G with the weight-arms B B at h.

It will be seen that as the weight-arms are thrown out or in by themovement of the flywheel the rock-arm G will be vibrated through theconnecting-links H H, connecting with said Weight-arms, and that therebythe rockshaft F will be rocked, the crank-arm E will be rocked, and thecrank-pin D moved in the are of a circle. This are is marked 2 2. Theline l 1, passing through the crank-pin D, represents thelead-line ofthe governor. The circle 4 represents the eXtreme path of the crank-pinD and the circle 5 the inner path ot' that pin. It will be seen that thejournal of theV rock-arm G-that is to say, the rockshaft F-is below orat one side of the center line A BX. Therefore the are 2 2 through whichthe crank-pin D moves will be nearer to the center line 3 3 at itsintersection with the line A B than it will at any other point in itsmovement. `The crank-pin D is carried toward the line A* BX when theweights B B move outwardly, and vice versa. Hence when the load is putupon the engine and the y-weights move inwardly it will be seen thatl(he engine increases its lead, because the center ofV the crank-pin Dmoves from the line l l and the line3 3 outwardly, while, on the otherhand, if the load is decreased and the weights B B fly outwardly, the,center of the crank-pin will be carried back toward the line l l as itapproaches the center line AX-BX, and thereby the lead of the enginewill be decreased;

In Fig. l thereis shown a small section Iigure of detail taken on theline C DX, where it will be seen that the arms B are formed with twoslots or openings through them, b and b2. The parts C and H, whichconnect with these weight arms, enter the slot b and the pivot-pins `cand h pass through the slot b2, and the heads of these pins have theirbearings on the outer sides of the weight-arms. This brings the bolt ofthe weight-arms upon the parts moved by them centrally in the arm.

These weight-arms are cast in the form shown and require no finishingbefore using, except to prepare the journal-opening of the inner end ofthe arm. The Weights B are cast solid with the arm, but they are addedto by cap-weights b', which are bolted to them. The weight of thesecap-weights may be varied in order to adjust the governor in degree ofspeed-as, for example, on the right of Fig. l the cap-weight is shownwith 300 marked on it, which indicates that the weight is intended toregulate the engine at three hundred revolutionsper minute.` If it isdesired to increase or decrease the speed of the engine, these threehundred weights will be removed and the Weightof proper weight willbesubstituted-as, for instance, a weight marked 275 or 325-faccording aswanted. This obviates the necessity of changing the tension IOOtwenty-five cap-weights would be substituted for the three hundred, andthe engine would run at three hundred and twenty-five revolutions and nochange of the tension of the spring C would be required.

What I claim isl. In a steam-engine governor, the combination, with aneccentricaIly-placed valvelnoving cralllcpin, of a crank-arm carryingsaid pin, which is moved by the action of the governor-weights and isjournaled eccentric to the shaft and so far to one side of the centerline AX B which cuts the lead-line 1 1 at right angles that when thesaid crank-arm is moved by the inward movement of the governor-weightsthe said pin will move away from said line l 1 on the opposite sidethereof from the center of motion of said crank-arm and thereby increasethe lead of the valve.

2. In a steam-engine governor, the combination, with thecentrifugally-acting weightarms and the centripetally-acting springsconnected with said weight-arms, of a roel@ arm journaled eccentric tothe main shaft and to one side of the center line AX 5X which is atright angles to the lead-line 1 1 and connected to the weight-arms bysuitable links, a crank-arm on said rock-shaft, and a crank-pin on saidcrank-arm for connecting with the valve-rod and which is eccentric tothe main shaft.

3. In a steam-engine governor, the combination, with aneccentrically-placed valvelnoving crank-pin, of a crank-arm carryingsaid pin, a rockshaft carrying said crankarm, which is journaledeccentric to the main shaft and at one side of a center line AX 3x whichcuts Lhelead-line l 1 at right angles, a cross-arm on said rock-shaft,weightarms, springs resisting the outward movement of said Weight-arms,and links connecting said Weight-arms with the opposite ends of saidcrossarm. il

L1. In a steam-engine governor, the combination, with aneccentrically-placed valvemoving cra11k-pin and a 'cranlcarm carryingsaid pin, of a rock-shaft carrying said crankarm, which is journaledeccentric to the shaft ,and so far to one side of a center line AX Bwhich cuts the lead-line 1 l at right angles that the crank-pin willmove outwardly away from the lead-line as it moves away from the line AXBX and therebyincreases the lead of the valve, and weight-arms connectedwith said rock-shaft so as to rock the same when said weight-arms aremoved inwardly or outwardly.

5. .In a steam-engine governor, the combination, with the links II 1Iand springs C C and tho pivot-pins c and 7L, of weight-arms having aslot Z) to receive the eye endsof said links and springs and a slot Zatright angles to the slot b to receive the pivot-pins @and 7L.

G. In a steanrengine governor, the combination, with the weights B', ofremovable and changeable cap-Weights ZJ', which are secured upon theweights B'.

7. In a steam-engine governor, the combi nation,with a weight-arm B andweight B,cast in one piece, of a cap-weight b', detachably secured tosaid weight.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM O. WEBBER. IVitnesses:

JNO. K. HALLocK, WM. P. HAYES.

